RUBICON

Thru Zero fm triangle core vco

Not long after David Dixon finished the Dixie design he began working on a totally novel approach to implementing tzfm (thru zero frequency modulation). After almost a year of experimenting and many pcb revisions later we are pleased to present what is surely David’s masterpiece as far as analog vco design is concerned.

The Rubicon is packed with the following features:

triangle core

switchable linear and (for the first time in any module) exponential tzfm

linear index vca for dynamic control of tzfm depth

symmetry control (full cw is normal, full ccw gives reversed waveforms, centered the vco is at 0 hz) with vc input